From 54c7526a66a6bb3397e62c32794ffc42e3da061f Mon Sep 17 00:00:00 2001
From: Gravit <gravit.min@ya.ru>
Date: Sun, 7 Apr 2019 15:33:57 +0700
Subject: [PATCH] =?UTF-8?q?[FIX]=20=D0=A3=D0=B4=D0=B0=D0=BB=D0=B5=D0=BD?=
 =?UTF-8?q?=D0=B0=20sm=20=D1=87=D0=B0=D1=81=D1=82=D1=8C=20LauncherAgent?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 .../ru/gravit/launcher/LauncherAgent.java     | 108 ------------------
 1 file changed, 108 deletions(-)

diff --git a/Launcher/src/main/java/ru/gravit/launcher/LauncherAgent.java b/Launcher/src/main/java/ru/gravit/launcher/LauncherAgent.java
index 14117c8e..877f018f 100644
--- a/Launcher/src/main/java/ru/gravit/launcher/LauncherAgent.java
+++ b/Launcher/src/main/java/ru/gravit/launcher/LauncherAgent.java
@@ -43,117 +43,9 @@ public static void premain(String agentArgument, Instrumentation instrumentation
         		if (trimmedArg.contains("r")) rt = false;
         	}
         }
-        if (rt || pb) replaceClasses(pb, rt);
     }
 
     public static boolean isStarted() {
         return isAgentStarted;
     }
-    
-    /**
-     * @author https://github.com/Konloch/JVM-Sandbox
-	 * Replaces the Runtime class via instrumentation, transforms the class via ASM
-	 */
-    private static void replaceClasses(boolean pb, boolean rt) {
-		for(Class<?> c : inst.getAllLoadedClasses()) {
-			if(rt && c.getName().equals("java.lang.Runtime")) {
-				try {
-					inst.redefineClasses(new java.lang.instrument.ClassDefinition(java.lang.Runtime.class, transformClass(c.getName(), getClassFile(c))));
-				} catch(Exception e) {
-					e.printStackTrace();
-				}
-			}
-			if(pb && c.getName().equals("java.lang.ProcessBuilder")) {
-				try {
-					inst.redefineClasses(new java.lang.instrument.ClassDefinition(java.lang.ProcessBuilder.class, transformClass(c.getName(), getClassFile(c))));
-				} catch(Exception e) {
-					e.printStackTrace();
-				}
-			}
-			if(c.getName().equals("java.awt.Robot")) {
-				try {
-					inst.redefineClasses(new java.lang.instrument.ClassDefinition(java.lang.ProcessBuilder.class, transformClass(c.getName(), getClassFile(c))));
-				} catch(Exception e) {
-					e.printStackTrace();
-				}
-			}
-		}
-	}
-	
-	/**
-     * @author https://github.com/Konloch/JVM-Sandbox
-	 * Use ASM to modify the byte array
-	 */
-	private static byte[] transformClass(String className, byte[] classBytes) {
-		if (className.equals("java.lang.Runtime")) {
-			ClassReader cr=new ClassReader(classBytes);
-			ClassNode cn=new ClassNode();
-			cr.accept(cn,ClassReader.EXPAND_FRAMES);
-			
-			for (Object o : cn.methods.toArray()) {
-				MethodNode m = (MethodNode) o;
-				if(m.name.equals("exec")) {
-					m.instructions.insert(new InsnNode(ARETURN));
-					m.instructions.insert(new InsnNode(ACONST_NULL));
-				}
-			}
-			ClassWriter cw=new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
-			cn.accept(cw);
-			return cw.toByteArray();
-		} else if (className.equals("java.lang.ProcessBuilder")) {
-			ClassReader cr=new ClassReader(classBytes);
-			ClassNode cn=new ClassNode();
-			cr.accept(cn,ClassReader.EXPAND_FRAMES);
-			
-			for (Object o : cn.methods.toArray()) {
-				MethodNode m = (MethodNode) o;
-				if(m.name.equals("start")) {
-					m.instructions.insert(new InsnNode(ARETURN));
-					m.instructions.insert(new InsnNode(ACONST_NULL));
-				}
-			}
-			ClassWriter cw=new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
-			cn.accept(cw);
-			return cw.toByteArray();
-		} else if (className.equals("java.awt.Robot")) {
-			ClassReader cr=new ClassReader(classBytes);
-			ClassNode cn=new ClassNode();
-			cr.accept(cn,ClassReader.EXPAND_FRAMES);
-			
-			for (Object o : cn.methods.toArray()) {
-				MethodNode m = (MethodNode) o;
-				if(	m.name.equals("createScreenCapture") 	|| m.name.equals("getPixelColor") ||
-					m.name.equals("keyPress") 				|| m.name.equals("keyRelease") ||
-					m.name.equals("mouseMove")				|| m.name.equals("mousePress") ||
-					m.name.equals("mouseWheel"))
-				{
-					m.instructions.insert(new InsnNode(ARETURN));
-					m.instructions.insert(new InsnNode(ACONST_NULL));
-				}
-			}
-			ClassWriter cw=new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
-			cn.accept(cw);
-			return cw.toByteArray();
-		}
-		return classBytes;
-	}
-	
-	/**
-     * @author https://github.com/Konloch/JVM-Sandbox
-     * Do not remove this method. Do not to cause classloading!
-	 * Grab the byte array from the loaded Class object
-	 * @param clazz
-	 * @return array, respending this class in bytecode.
-	 * @throws IOException
-	 */
-	private static byte[] getClassFile(Class<?> clazz) throws IOException {     
-	    InputStream is = clazz.getResourceAsStream( "/" + clazz.getName().replace('.', '/') + ".class");
-	    ByteArrayOutputStream baos = new ByteArrayOutputStream();
-	    int r = 0;
-	    byte[] buffer = new byte[8192];
-	    while((r=is.read(buffer))>=0) {
-	        baos.write(buffer, 0, r);
-	    }   
-	    return baos.toByteArray();
-	}
 }